performance: get emission objects along the schedules

panikweb/views.py

@@ -17,7 +17,7 @@ class ProgramView(TemplateView):
 
     def get_context_data(self, **kwargs):
         context = super(ProgramView, self).get_context_data(**kwargs)
-        schedules = Schedule.objects.all().order_by('datetime')
+        schedules = Schedule.objects.select_related().order_by('datetime')
         days = []
         for day in range(7):
             days.append({'schedules': [x for x in schedules if x.is_on_weekday(day+1)],